A box-type substation

Abstract

The utility model relates to a box -type substation relates to substation technical field, include: substation box, connecting plate is set up on substation box, lift support base, the activity sets up on connecting plate is used for keeping substation box is in fixed steady state, lift wheel support, the activity sets up on connecting plate is used for driving substation box is in mobile state, lift transmission part, set up on connecting plate is used for driving lift support base and lift wheel support lift, change substation box's fixed state or mobile state. The utility model discloses through lift transmission part, reduces the equipment failure risk that leads to the vibration in the process of moving, guarantees the normal operation of substation internal electrical equipment, avoids the short circuit, the problem such as poor contact caused by vibration.

Description

Technical Field

[0001] This application relates to the field of substation technology, and more particularly to a prefabricated substation. Background Technology

[0002] A prefabricated substation is a compact indoor / outdoor power distribution device that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment according to a specific wiring scheme. One of the most important functions of a prefabricated substation is voltage transformation. It converts the high-voltage electrical energy transmitted from the upper-level power grid into low-voltage electrical energy suitable for users through a transformer. This voltage transformation is crucial for the normal operation of the power system.

[0003] Currently, Chinese utility model patent application CN 218602990U, published on March 10, 2023, discloses a prefabricated substation, including a prefabricated substation body. A fixed frame is fixedly connected to the bottom of the prefabricated substation body, and support plates are fixedly connected to two opposite side walls of the fixed frame. A movable plate is connected to the lower side wall of the support plate via a lifting mechanism, and multiple symmetrically arranged first rollers are fixedly connected to the lower side wall of the movable plate. Two symmetrically arranged notches are opened on the two opposite side walls of the fixed frame, and a sliding plate is slidably connected within each notch. A second roller is fixedly connected to the lower side wall of each sliding plate, and each sliding plate is connected to the inner side wall of the fixed frame via a guide mechanism. This prefabricated substation facilitates movement of the prefabricated substation body. After movement, the first rollers are retracted into the fixed frame for support, making it more stable and reliable. Furthermore, it prevents the prefabricated substation body from tipping over during movement, making it safer and more reliable.

[0004] In related technologies, when a prefabricated substation needs to be moved, there is a process of lifting and lowering the bottom of the prefabricated substation. During this process, vibrations may occur, which may loosen the internal mechanical structures of transformers, switchgear, etc., loosen the internal electrical connection points, increase contact resistance, cause local overheating, or even cause a fire.

[0005] Therefore, it is necessary to provide a prefabricated substation to solve the above problems. Utility Model Content

[0006] This application provides a prefabricated substation to improve the technical problem in related technologies where the prefabricated substation undergoes a bottom lifting and lowering process when it needs to be moved, during which vibrations occur and cause the internal mechanical structures such as transformer switching equipment to loosen.

[0007] This application provides a prefabricated substation, including:

[0008] Substation enclosure;

[0009] A connecting plate is installed on the substation enclosure;

[0010] The lifting support base is movably mounted on the connecting plate to keep the substation enclosure in a fixed and stable state;

[0011] The lifting wheel bracket is movably mounted on the connecting plate and is used to move the substation enclosure.

[0012] A lifting transmission component is installed on the connecting plate to drive the lifting support base and the lifting wheel bracket to lift and lower, thereby changing the fixed or movable state of the substation enclosure.

[0013] The technical solutions described in this application embodiment have at least the following technical effects: When the substation enclosure needs to be moved, the lifting transmission component drives the lifting support base and the lifting wheel bracket to rise and fall. When the enclosure needs to be fixed, the lifting transmission component drives the lifting support base to fall and the lifting wheel bracket to rise, maintaining the stability of the substation enclosure. When the enclosure needs to be moved, the lifting transmission component drives the lifting wheel bracket to fall and the lifting support base to rise, maintaining the movable state of the substation enclosure and reducing the probability of vibration caused by the need for lifting and falling during the change of state.

[0014] The prefabricated substation provided in this application embodiment can reduce the risk of equipment failure caused by vibration during movement through lifting transmission components, ensure the normal operation of electrical equipment inside the substation, avoid problems such as short circuits and poor contact caused by vibration, and the stable state of the enclosure can prevent accidental shaking in a fixed position or during movement, thereby avoiding possible personal injury to operators.

[0015] In some embodiments, the lifting transmission component includes:

[0016] The motor is mounted on the connecting plate;

[0017] The reciprocating lead screw is coaxially driven with the output shaft of the motor.

[0018] The first eccentric wheel is movably mounted on the reciprocating lead screw. The first eccentric wheel has a first annular groove. A first sliding block is slidably mounted in the first annular groove. The first sliding block is connected to the lifting wheel bracket and is used to drive the lifting wheel bracket to rise and fall.

[0019] The second eccentric wheel is movably mounted on the reciprocating lead screw. The second eccentric wheel has a second annular groove. A second sliding block is slidably mounted in the second annular groove. The second sliding block is connected to the lifting support base and is used to drive the lifting support base to rise and fall.

[0020] A connecting piece is disposed on the reciprocating lead screw and is rotatably connected to the reciprocating lead screw, for driving the first eccentric wheel and the second eccentric wheel to rotate.

[0021] In some embodiments, the connector includes:

[0022] A reciprocating moving part is mounted on the reciprocating lead screw and is threadedly connected to the reciprocating lead screw. A transmission block is mounted on the reciprocating moving part, and a guide rod is mounted on the connecting plate. The other end of the transmission block is movably sleeved on the guide rod to help the reciprocating moving part move horizontally on the reciprocating lead screw.

[0023] A turntable is disposed at both ends of the reciprocating moving part;

[0024] The first mounting plate is rotatably mounted on one end of the reciprocating moving part via the turntable;

[0025] The second mounting plate is rotatably mounted on the other end of the reciprocating moving part via the turntable;

[0026] The first insert rod is arranged in a ring array on the first mounting plate. The first eccentric wheel has a first slot. The first insert rod is movably connected in the first slot to drive the first eccentric wheel to rotate.

[0027] The second insert rod is arranged in a ring array on the second mounting plate. The second eccentric wheel has a second slot, and the second insert rod is movably connected in the second slot to drive the first eccentric wheel to rotate.

[0028] In some embodiments, both the first mounting plate and the second mounting plate are provided with connecting blocks that abut against the threads on the reciprocating lead screw, so that the reciprocating moving part can drive the first mounting plate and the second mounting plate to rotate during the movement.

[0029] In some embodiments, when the first insertion rod abuts against the bottom of the first slot, the first mounting plate drives the first eccentric wheel to rotate 90 degrees; when the second insertion rod abuts against the bottom of the second slot, the second mounting plate drives the second eccentric wheel to rotate 90 degrees.

[0030] In some embodiments, the motor is a servo motor used to control the rotation direction of the reciprocating lead screw.

[0031] In some embodiments, the lifting wheel bracket is provided with casters. Attached Figure Description

[0032] Figure 1 A three-dimensional structural diagram of the prefabricated substation provided in the embodiments of this application;

[0033] Figure 2 Schematic cross-sectional structure of the connecting plate provided in the embodiments of this application Figure 1 ;

[0034] Figure 3 Schematic cross-sectional structure of the connecting plate provided in the embodiments of this application Figure 2 ;

[0035] Figure 4 A three-dimensional structural schematic diagram of the lifting transmission component provided in the embodiments of this application;

[0036] Figure 5 A three-dimensional structural schematic diagram of the reciprocating lead screw provided in the embodiments of this application;

[0037] Figure 6 A three-dimensional structural diagram of the first mounting plate and the second mounting plate provided in the embodiments of this application;

[0038] The following are the labeling elements in the figures:

[0039] 1. Substation enclosure; 11. Connecting plate; 12. Lifting support base; 13. Lifting wheel bracket; 131. Caster wheel; 2. Lifting transmission component; 21. Motor; 22. Reciprocating lead screw; 23. First eccentric wheel; 231. First annular groove; 232. First sliding block; 24. Second eccentric wheel; 241. Second annular groove; 242. Second sliding block; 25. Connecting component; 251. Reciprocating moving component; 2511. Transmission block; 2512. Guide rod; 252. First insertion rod; 253. Second insertion rod; 254. First slot; 255. Second slot; 256. First mounting plate; 257. Second mounting plate; 258. Connecting block; 259. Turntable. Detailed Implementation

[0040] In related technologies, when a prefabricated substation needs to be moved, there is a process of lifting and lowering the bottom of the prefabricated substation. During this process, vibrations may occur, which may loosen the internal mechanical structures of transformers, switchgear, etc., loosen the internal electrical connection points, increase contact resistance, cause local overheating, or even cause a fire.

[0041] Based on this, in order to improve the technical problem in the related technology that when the prefabricated substation is moved, the bottom of the prefabricated substation is raised and lowered, and vibration occurs during the process, which causes the internal mechanical structure such as the transformer switchgear to loosen, the embodiments of this application provide the following solution.

[0042] Please refer to the following: Figures 1 to 6This application provides a prefabricated substation, which includes a substation enclosure 1, a connecting plate 11, a lifting support base 12, a lifting wheel bracket 13, and a lifting transmission component 2. The substation enclosure 1 is used to support components; the connecting plate 11 is disposed on the substation enclosure 1; the lifting support base 12 is movably disposed on the connecting plate 11 to keep the substation enclosure 1 in a fixed and stable state; the lifting wheel bracket 13 is movably disposed on the connecting plate 11 to drive the substation enclosure 1 to move; and the lifting transmission component 2 is disposed on the connecting plate 11 to drive the lifting support base 12 and the lifting wheel bracket 13 to move up and down, changing the fixed or moving state of the substation enclosure 1.

[0043] In this embodiment of the prefabricated substation, when the substation enclosure 1 needs to be moved, the lifting transmission component 2 drives the lifting support base 12 and the lifting wheel bracket 13 to rise and fall. When a fixed position is required, the lifting transmission component 2 drives the lifting support base 12 to fall and the lifting wheel bracket 13 to rise, maintaining the stability of the substation enclosure 1. When a move is required, the lifting transmission component 2 drives the lifting wheel bracket 13 to fall and the lifting support base 12 to rise, maintaining the movable state of the substation enclosure 1. This reduces the probability of vibration caused by the need for lifting and falling during position changes. Thus, the lifting transmission component 2 reduces the risk of equipment failure due to vibration during movement, ensuring the normal operation of the electrical equipment inside the substation and avoiding problems such as short circuits and poor contact caused by vibration. The stable enclosure state prevents accidental shaking during fixing or movement, thereby avoiding potential personal injury to operators.

[0044] In some embodiments, the lifting transmission component 2 includes: a motor 21, mounted on a connecting plate 11; a reciprocating screw 22, coaxially driven with the output shaft of the motor 21; a first eccentric wheel 23, movably mounted on the reciprocating screw 22, the first eccentric wheel 23 having a first annular groove 231, a first sliding block 232 slidably mounted within the first annular groove 231, the first sliding block 232 being connected to the lifting wheel bracket 13 for driving the lifting wheel bracket 13 to rise and fall; a second eccentric wheel 24, movably mounted on the reciprocating screw 22, the second eccentric wheel 24 having a second annular groove 241, a second sliding block 242 slidably mounted within the second annular groove 241, the second sliding block 242 being connected to the lifting support base 12 for driving the lifting support base 12 to rise and fall; and a connecting member 25, mounted on the reciprocating screw 22, threadedly rotatably connected to the reciprocating screw 22 for driving the first eccentric wheel 23 and the second eccentric wheel 24 to rotate.

[0045] With this configuration, when the substation enclosure 1 needs to be moved, the motor 21 is turned on, driving the reciprocating screw 22 to rotate. However, the rotation of the reciprocating screw 22 does not cause any positional shift between the first eccentric wheel 23 and the second eccentric wheel 24. The connecting piece 25 moves back and forth on the reciprocating screw 22 due to the forward and reverse rotation of the motor 21, thereby driving the rotation of the first eccentric wheel 23 and the second eccentric wheel 24 respectively. When the motor 21 rotates forward, the connecting piece 25 and the first eccentric wheel 23... When the motor 21 moves away from the second eccentric wheel 24, it drives the first eccentric wheel 23 to rotate. The first eccentric wheel 23 causes the first sliding block 232 to slide within the first annular groove 231, thus raising and lowering the lifting wheel bracket 13. Similarly, when the motor 21 reverses direction, the connecting piece 25 abuts against the second eccentric wheel 24, moving away from the first eccentric wheel 23 and driving the second eccentric wheel 24 to rotate. The second eccentric wheel 24 causes the second sliding block 242 to slide within the second annular groove 241, thus raising and lowering the lifting support base 12. In this way, the position of the substation enclosure 1 can be precisely adjusted, and the speed and rotation angle of the motor 21 can be precisely controlled, so that the movement distance and position change of the enclosure can achieve a certain degree of accuracy. At the same time, it can ensure the stability of the lifting process and avoid equipment damage or installation errors caused by shaking or instability during the lifting process.

[0046] In some embodiments, the connecting member 25 includes: a reciprocating moving member 251, disposed on the reciprocating lead screw 22 and threadedly rotatably connected to the reciprocating lead screw 22; a transmission block 2511 disposed on the reciprocating moving member 251; a guide rod 2512 disposed on the connecting plate 11; and the other end of the transmission block 2511 movably sleeved on the guide rod 2512 to assist the reciprocating moving member 251 in horizontal movement on the reciprocating lead screw 22; a turntable 259 disposed at both ends of the reciprocating moving member 251; and a first mounting plate 256 rotatably disposed at one end of the reciprocating moving member 251 via the turntable 259. The second mounting plate 257 is rotatably mounted on the other end of the reciprocating moving part 251 via the turntable 259; the first insert rod 252 is arranged in a ring array on the first mounting plate 256, and the first eccentric wheel 23 has a first slot 254. The first insert rod 252 is movably connected in the first slot 254 to drive the first eccentric wheel 23 to rotate; the second insert rod 253 is arranged in a ring array on the second mounting plate 257, and the second eccentric wheel 24 has a second slot 255. The second insert rod 253 is movably connected in the second slot 255 to drive the first eccentric wheel 23 to rotate.

[0047] With this configuration, the reciprocating screw 22 drives the reciprocating moving part 251 to move horizontally and reciprocally on the reciprocating screw 22, while the transmission block 2511 and guide rod 2512 restrict its rotation. When the motor 21 rotates forward, the reciprocating screw 22 drives the reciprocating moving part 251 to approach the first eccentric wheel 23. The first mounting plate 256, guided by the thread on the reciprocating screw 22 via the turntable 259, rotates on the reciprocating moving part 251, causing the first insert 252 on the first mounting plate 256 to insert into the first slot 254 on the first eccentric wheel 23, thus driving the first eccentric wheel 23 to rotate. At this time... When the reciprocating moving part 251 moves away from the second eccentric wheel 24, the second eccentric wheel 24 remains stationary. Similarly, when the motor 21 reverses, the reciprocating screw 22 drives the reciprocating moving part 251 closer to the second eccentric wheel 24. The second mounting plate 257, guided by the thread on the reciprocating screw 22 via the turntable 259, rotates on the reciprocating moving part 251, causing the second insert 253 on the second mounting plate 257 to insert into the second slot 255 on the second eccentric wheel 24, driving the second eccentric wheel 24 to rotate. At this time, the reciprocating moving part 251 moves away from the first eccentric wheel 23, and the first eccentric wheel 23 remains stationary. Thus, by reversing the motor 21, the direction of movement of the reciprocating moving part 251 on the reciprocating screw 22 can be switched, thereby achieving separate control of the first eccentric wheel 23 and the second eccentric wheel 24. This operation method is simple and flexible, allowing operators to quickly adjust the position of the housing according to actual needs.

[0048] In some embodiments, both the first mounting plate 256 and the second mounting plate 257 are provided with connecting blocks 258, which abut against the threads on the reciprocating lead screw 22, so that the reciprocating moving part 251 can drive the first mounting plate 256 and the second mounting plate 257 to rotate during the movement.

[0049] With this configuration, during the horizontal movement of the reciprocating moving part 251 on the reciprocating lead screw 22, the connecting blocks 258 on the first mounting plate 256 and the second mounting plate 257 allow the first mounting plate 256 and the second mounting plate 257 to rotate via the turntable 259 and the connecting blocks 258, guided by the threads on the reciprocating lead screw 22. This facilitates the rotation of the first insert rod 252 and the second insert rod 253 on the first mounting plate 256 and the second mounting plate 257, respectively. Thus, the threaded engagement between the reciprocating lead screw 22 and the reciprocating moving part 251, and the rotation of the turntable 259 on the reciprocating moving part 251, provide a highly efficient transmission method. Power is transmitted from the motor 21 to the reciprocating lead screw 22, then through the reciprocating moving part 251 to the first mounting plate 256 and the second mounting plate 257, ultimately driving the first eccentric wheel 23 and the second eccentric wheel 24. The entire process involves minimal energy loss.

[0050] In some embodiments, when the first insertion rod 252 abuts against the bottom of the first slot 254, the first mounting plate 256 drives the first eccentric wheel 23 to rotate 90 degrees; when the second insertion rod 253 abuts against the bottom of the second slot 255, the second mounting plate 257 drives the second eccentric wheel 24 to rotate 90 degrees.

[0051] With this configuration, when motor 21 rotates forward, the first insertion rod 252, when abutting the bottom of the first slot 254, drives the first eccentric wheel 23 to rotate 90 degrees via the first mounting plate 256. Then, when motor 21 rotates in reverse, the first mounting plate 256 drives the first eccentric wheel 23 to rotate 90 degrees as the first insertion rod 252 moves out of the first slot 254. This means that during the movement of the first insertion rod 252 within the first slot 254, it drives the first eccentric wheel 23 to rotate 180 degrees, helping the lifting wheel bracket 13 rise. At this time, the second insertion rod 253 moves away from the second slot 255, and the second eccentric wheel 24 is stationary. Similarly, when motor 21 rotates in reverse, it drives the second insertion rod 253 to move within the second slot 255, driving the second eccentric wheel 24 to rotate 180 degrees, helping the lifting support base 12 rise. At this time, the first insertion rod 252 moves away from the first slot 254, and the first eccentric wheel 23 is stationary. When a fixed position is required, motor 21 is activated to drive the reciprocating screw 22 to rotate. When the substation enclosure 1 is moved, the motor 21 reverses direction, causing the second insertion rod 253 to abut against the second slot 255, lowering the lifting support base 12 while keeping the lifting wheel bracket 13 stationary. Then, the motor 21 reverses direction again, causing the first insertion rod 252 to abut against the first slot 254, raising the lifting wheel bracket 13 while keeping the lifting support base 12 stationary, thus maintaining the stability of the substation enclosure 1. When the substation enclosure 1 needs to be moved, the motor 21 is turned on, causing the reciprocating screw 22 to rotate. The motor 21 rotates forward, causing the first insertion rod 252 to abut against the first slot 254, lowering the lifting wheel bracket 13 while keeping the lifting support base 12 stationary. Then, the motor 21 reverses direction, causing the second insertion rod 253 to abut against the second slot 255, raising the lifting support base 12 while keeping the lifting wheel bracket 13 stationary, thus maintaining the movable state of the substation enclosure 1. The lowest points of the lifting support base 12 and the lifting wheel bracket 13 are at the same height, reducing the probability of vibration caused by the need for raising and lowering during position changes. Thus, in a fixed position, the lifting wheel bracket 13 and the lifting support base 12 can be kept at a stable height through the precise control of the motor 21, ensuring the stability of the substation enclosure 1. This effectively prevents equipment shaking or tilting caused by instability during the lifting process, improving the operational safety and reliability of the equipment. The lowest point heights of the lifting support base 12 and the lifting wheel bracket 13 are the same. This design reduces the distance that needs to be lifted during the change of state, thereby reducing the probability of vibration.

[0052] In some embodiments, the motor 21 is a servo motor 21, used to control the rotation direction of the reciprocating lead screw 22.

[0053] With this configuration, the servo motor 21 is a high-performance motor 21 that can achieve very precise position control. Through feedback devices such as encoders, the servo motor 21 can precisely control the rotation angle and position of the reciprocating screw 22. The position of the reciprocating moving part 251 on the reciprocating screw 22 can be precisely controlled, thereby achieving high-precision adjustment of the position of the substation enclosure 1.

[0054] In some embodiments, the lifting wheel bracket 13 is provided with casters 131.

[0055] With this configuration, the casters 131 can move in all directions 360 degrees. This allows the substation enclosure 1 to move without directional restrictions. No matter which direction the enclosure needs to be moved, it can be easily achieved using the casters 131. Because the casters 131 make the movement of the enclosure more convenient and faster, it can significantly improve work efficiency. During the construction and maintenance of substations, the installation, commissioning, and replacement of equipment require frequent movement of the enclosure. The use of casters 131 can reduce the time and manpower required to move the enclosure, thereby speeding up the overall work progress.

[0056] The implementation principle of a prefabricated substation according to an embodiment of this application is as follows: When the substation box 1 needs to be moved, the lifting transmission component 2 drives the lifting support base 12 and the lifting wheel bracket 13 to rise and fall. When the position needs to be fixed, the lifting transmission component 2 drives the lifting support base 12 to fall and the lifting wheel bracket 13 to rise, maintaining the stability of the substation box 1. When the position needs to be moved, the lifting transmission component 2 drives the lifting wheel bracket 13 to fall and the lifting support base 12 to rise, maintaining the movable state of the substation box 1.

[0057] During this process, by turning on the motor 21, the motor 21 drives the reciprocating screw 22 to rotate. However, the rotation of the reciprocating screw 22 does not cause any positional shift between the first eccentric wheel 23 and the second eccentric wheel 24. The reciprocating screw 22 drives the reciprocating moving part 251 to move horizontally and reciprocally on the reciprocating screw 22 under the restriction of rotation by the transmission block 2511 and the guide rod 2512. When the motor 21 rotates forward, the reciprocating screw 22 drives the reciprocating moving part 251 to move closer to the first eccentric wheel 23. The first mounting plate 256 moves the reciprocating screw 24 through the turntable 259 and the connecting block 258. Guided by the thread on the second eccentric wheel 24, the reciprocating moving part 251 rotates, causing the first insert rod 252 on the first mounting plate 256 to insert into the first slot 254 on the first eccentric wheel 23, thus driving the first eccentric wheel 23 to rotate. At this time, the reciprocating moving part 251 moves away from the second eccentric wheel 24, and the second eccentric wheel 24 remains stationary. Similarly, when the motor 21 reverses, the reciprocating screw 22 drives the reciprocating moving part 251 closer to the second eccentric wheel 24. The second mounting plate 257, guided by the thread on the reciprocating screw 22 through the turntable 259 and the connecting block 258, rotates on the reciprocating moving part 251. On the moving part 251, the second insert 253 on the second mounting plate 257 is inserted into the second slot 255 on the second eccentric wheel 24, causing the second eccentric wheel 24 to rotate. At this time, the reciprocating moving part 251 moves away from the first eccentric wheel 23, and the first eccentric wheel 23 remains stationary. When the motor 21 rotates forward, the first insert 252, when it abuts against the bottom of the first slot 254, drives the first eccentric wheel 23 to rotate 90 degrees through the first mounting plate 256. Subsequently, the motor 21 rotates in reverse, causing the first insert 252 to rotate out of the first slot 254, and the first mounting plate 256 drives the first eccentric wheel 23 to rotate 90 degrees. When the pivot wheel 23 rotates 90 degrees, it means that during the movement of the first insert rod 252 in the first slot 254, it drives the first eccentric wheel 23 to rotate 180 degrees, helping the lifting wheel bracket 13 to rise. At this time, the second insert rod 253 moves away from the second slot 255, and the second eccentric wheel 24 is stationary. Similarly, when the motor 21 reverses, it drives the second insert rod 253 to move in the second slot 255, driving the second eccentric wheel 24 to rotate 180 degrees, helping the lifting support base 12 to rise. At this time, the first insert rod 252 moves away from the first slot 254, and the first eccentric wheel 23 is stationary.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A prefabricated substation, characterized in that, include: Substation enclosure (1); A connecting plate (11) is installed on the substation enclosure (1); The lifting support base (12) is movably mounted on the connecting plate (11) to keep the substation box (1) in a fixed and stable state; The lifting wheel bracket (13) is movably mounted on the connecting plate (11) and is used to drive the substation box (1) to move. The lifting transmission component (2) is installed on the connecting plate (11) and is used to drive the lifting support base (12) and the lifting wheel bracket (13) to lift and lower, thereby changing the fixed state or the moving state of the substation box (1).

2. A prefabricated substation according to claim 1, characterized in that, The lifting transmission component (2) includes: The motor (21) is mounted on the connecting plate (11); The reciprocating lead screw (22) is coaxially driven with the output shaft of the motor (21); The first eccentric wheel (23) is movably mounted on the reciprocating lead screw (22). The first eccentric wheel (23) has a first annular groove (231). A first sliding block (232) is slidably mounted in the first annular groove (231). The first sliding block (232) is connected to the lifting wheel bracket (13) and is used to drive the lifting wheel bracket (13) to rise and fall. The second eccentric wheel (24) is movably mounted on the reciprocating lead screw (22). The second eccentric wheel (24) has a second annular groove (241). A second sliding block (242) is slidably mounted in the second annular groove (241). The second sliding block (242) is connected to the lifting support base (12) and is used to drive the lifting support base (12) to rise and fall. The connector (25) is disposed on the reciprocating lead screw (22) and is threadedly connected to the reciprocating lead screw (22) to drive the first eccentric wheel (23) and the second eccentric wheel (24) to rotate.

3. A prefabricated substation according to claim 2, characterized in that, The connector (25) includes: A reciprocating moving part (251) is disposed on the reciprocating lead screw (22) and is threadedly connected to the reciprocating lead screw (22). A transmission block (2511) is disposed on the reciprocating moving part (251), and a guide rod (2512) is disposed on the connecting plate (11). The other end of the transmission block (2511) is movably sleeved on the guide rod (2512) to help the reciprocating moving part (251) move horizontally on the reciprocating lead screw (22). A turntable (259) is disposed at both ends of the reciprocating moving part (251); The first mounting plate (256) is rotatably mounted on one end of the reciprocating moving part (251) via the turntable (259); The second mounting plate (257) is rotatably mounted on the other end of the reciprocating moving part (251) via the turntable (259); The first insert rod (252) is arranged in a ring array on the first mounting plate (256). The first eccentric wheel (23) has a first slot (254). The first insert rod (252) is movably connected in the first slot (254) to drive the first eccentric wheel (23) to rotate. The second insert (253) is arranged in a ring array on the second mounting plate (257). The second eccentric wheel (24) has a second slot (255). The second insert (253) is movably connected in the second slot (255) to drive the first eccentric wheel (23) to rotate.

4. A prefabricated substation according to claim 3, characterized in that: Both the first mounting plate (256) and the second mounting plate (257) are provided with connecting blocks (258), which abut against the threads on the reciprocating screw (22) and are used to drive the first mounting plate (256) and the second mounting plate (257) to rotate during the movement of the reciprocating moving part (251).

5. A prefabricated substation according to claim 4, characterized in that: When the first insertion rod (252) abuts against the bottom of the first slot (254), the first mounting plate (256) drives the first eccentric wheel (23) to rotate 90 degrees; when the second insertion rod (253) abuts against the bottom of the second slot (255), the second mounting plate (257) drives the second eccentric wheel (24) to rotate 90 degrees.

6. A prefabricated substation according to claim 5, characterized in that: The motor (21) is a servo motor used to control the rotation direction of the reciprocating lead screw (22).

7. A prefabricated substation according to claim 6, characterized in that: The lifting wheel bracket (13) is equipped with casters (131).

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